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US 2022/0177665 A1Published application
Blowing agent compositions for insulating foams
AssigneeOwens Corning Intellectual Capital, LLC
InventorsChase Boudreaux, Yadollah Delaviz, Xiangmin Han, S. Thomas Brammer, Barbara Ann Fabian, Mitchell Zane Weekley, Jeffrey Thomas
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Abstract
Disclosed is a blowing agent composition comprising a hydrofluoroolefins (HFO) and a branched hydrocarbon, and a foamable polymer composition comprising the blowing agent composition. Also disclosed is a method of making a polymer foam utilizing a blowing agent composition comprising an HFO and a branched hydrocarbon.
Claims14
A foamable polymer composition comprising:
- a matrix polymer composition comprising polystyrene;
- and
- a blowing agent composition comprising:
- from 1 to 5 wt. % of a hydrofluoroolefin (HFO) blowing agent comprising HFO-1234ze;
- from 0.05 to 1 wt. % of a branched hydrocarbon blowing agent;
- and
- from 0.05 to 5 wt. % of a hydrofluorocarbon (HFC) blowing agent,
- wherein the foamable polymer composition contains essentially no water, and
- wherein each wt. % is based upon the total weight of the foamable polymer composition.
6 more elements
A foamable polymer composition comprising:
- a matrix polymer composition comprising polystyrene;
- and
- a blowing agent composition comprising:
- from 1 to 5 wt. % of a hydrofluoroolefin (HFO) blowing agent comprising HFO-1234ze;
- from 0.05 to 1 wt. % of a branched hydrocarbon blowing agent;
- and
- from 0.05 to 5 wt. % of a co-blowing agent comprising carbon dioxide,
- wherein the foamable polymer composition contains essentially no water, and
- wherein each wt. % is based upon the total weight of the foamable polymer composition.
6 more elements
A method of manufacturing polymer foam, comprising:
- a) providing a matrix polymer composition comprising polystyrene;
- b) melting the matrix polymer composition in an extruder;
- c) injecting a blowing agent composition comprising into the molten matrix polymer composition within the extruder to form a foamable polymer composition, wherein the blowing agent composition comprises:
- from 1 to 5 wt. % of a hydrofluoroolefin (HFO) blowing agent comprising HFO-1234ze;
- from 0.05 to 1 wt. % of a branched hydrocarbon blowing agent;
- and
- from 0.05 to 5 wt. % of a co-blowing agent comprising a hydrofluorocarbon (HFC), carbon dioxide, or combinations thereof,
- wherein each wt. % is based upon the total weight of the foamable polymer composition,
- wherein the foamable polymer composition contains essentially no water or carbon dioxide;
- and
- d) extruding the foamable polymer composition to form a polymer foam.
8 more elements
Dependencies are inferred from the claim text.